Erik Estrada stars as a DEA agent who is investigating the violent deaths of several drug cartel members.
it turns out that a huge pack of Chupacabra's are running over the countryside in San Antonio, Texas and it is soon up to a small party of people to stop the violent rampage.
The creatures are CGI and look like starving dogs. They are very convincing in some scenes and in some scenes not so good. The plot is not hard to follow and the action starts right off and doesn't end until the movie is over.
Made for the SYFY channel, this is better than most sci-fi efforts and I loved the final battle at the Alamo against the army of inhuman monsters.
If you get a chance, check it out. You could do much worse.